On the theoretical calculation of wavelengths and oscillator strengths for Fe X and similar spectra

• Published in: Monthly notices of the Royal Astronomical Society Vol. 210; no. 2; pp. 439 - 442
• Main Authors: Crown, R. D., Bromage, G. E., Fawcett, B. C.
• Format: Journal Article
• Language: English
• Published: Oxford, UK Oxford University Press 01-09-1984
• ISSN: 0035-8711; 1365-2966
• DOI: 10.1093/mnras/210.2.439

We re-emphasize the importance of both spin–orbit interaction and configuration-mixing effects in the calculation of wavelengths and oscillator strengths for heavy-element moderately-ionized spectra; with particular reference to Fe X resonance lines. We correct several rather misleading statements in a recent paper by R. Glass on Fe X, and dispute the argument that three- and four-electron correlation effects are important. We discuss afresh the (well-established) method of allowing for weak correlations by the scaling of radial integrals, and consider its implications for oscillator strength calculations.